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-rw-r--r--include/linux/usb/audio-v3.h15
-rw-r--r--include/uapi/linux/usb/audio.h49
-rw-r--r--sound/usb/mixer.c51
3 files changed, 104 insertions, 11 deletions
diff --git a/include/linux/usb/audio-v3.h b/include/linux/usb/audio-v3.h
index a710e28b5215..334bfa6dfb47 100644
--- a/include/linux/usb/audio-v3.h
+++ b/include/linux/usb/audio-v3.h
@@ -387,6 +387,12 @@ struct uac3_interrupt_data_msg {
#define UAC3_CONNECTORS 0x0f
#define UAC3_POWER_DOMAIN 0x10
+/* A.20 PROCESSING UNIT PROCESS TYPES */
+#define UAC3_PROCESS_UNDEFINED 0x00
+#define UAC3_PROCESS_UP_DOWNMIX 0x01
+#define UAC3_PROCESS_STEREO_EXTENDER 0x02
+#define UAC3_PROCESS_MULTI_FUNCTION 0x03
+
/* A.22 AUDIO CLASS-SPECIFIC REQUEST CODES */
/* see audio-v2.h for the rest, which is identical to v2 */
#define UAC3_CS_REQ_INTEN 0x04
@@ -406,6 +412,15 @@ struct uac3_interrupt_data_msg {
#define UAC3_TE_OVERFLOW 0x04
#define UAC3_TE_LATENCY 0x05
+/* A.23.10 PROCESSING UNITS CONTROL SELECTROS */
+
+/* Up/Down Mixer */
+#define UAC3_UD_MODE_SELECT 0x01
+
+/* Stereo Extender */
+#define UAC3_EXT_WIDTH_CONTROL 0x01
+
+
/* BADD predefined Unit/Terminal values */
#define UAC3_BADD_IT_ID1 1 /* Input Terminal ID1: bTerminalID = 1 */
#define UAC3_BADD_FU_ID2 2 /* Feature Unit ID2: bUnitID = 2 */
diff --git a/include/uapi/linux/usb/audio.h b/include/uapi/linux/usb/audio.h
index 74e520fb944f..ddc5396800aa 100644
--- a/include/uapi/linux/usb/audio.h
+++ b/include/uapi/linux/usb/audio.h
@@ -390,33 +390,64 @@ static inline __u8 uac_processing_unit_iChannelNames(struct uac_processing_unit_
static inline __u8 uac_processing_unit_bControlSize(struct uac_processing_unit_descriptor *desc,
int protocol)
{
- return (protocol == UAC_VERSION_1) ?
- desc->baSourceID[desc->bNrInPins + 4] :
- 2; /* in UAC2, this value is constant */
+ switch (protocol) {
+ case UAC_VERSION_1:
+ return desc->baSourceID[desc->bNrInPins + 4];
+ case UAC_VERSION_2:
+ return 2; /* in UAC2, this value is constant */
+ case UAC_VERSION_3:
+ return 4; /* in UAC3, this value is constant */
+ default:
+ return 1;
+ }
}
static inline __u8 *uac_processing_unit_bmControls(struct uac_processing_unit_descriptor *desc,
int protocol)
{
- return (protocol == UAC_VERSION_1) ?
- &desc->baSourceID[desc->bNrInPins + 5] :
- &desc->baSourceID[desc->bNrInPins + 6];
+ switch (protocol) {
+ case UAC_VERSION_1:
+ return &desc->baSourceID[desc->bNrInPins + 5];
+ case UAC_VERSION_2:
+ return &desc->baSourceID[desc->bNrInPins + 6];
+ case UAC_VERSION_3:
+ return &desc->baSourceID[desc->bNrInPins + 2];
+ default:
+ return NULL;
+ }
}
static inline __u8 uac_processing_unit_iProcessing(struct uac_processing_unit_descriptor *desc,
int protocol)
{
__u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
- return *(uac_processing_unit_bmControls(desc, protocol)
- + control_size);
+
+ switch (protocol) {
+ case UAC_VERSION_1:
+ case UAC_VERSION_2:
+ default:
+ return *(uac_processing_unit_bmControls(desc, protocol)
+ + control_size);
+ case UAC_VERSION_3:
+ return 0; /* UAC3 does not have this field */
+ }
}
static inline __u8 *uac_processing_unit_specific(struct uac_processing_unit_descriptor *desc,
int protocol)
{
__u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
- return uac_processing_unit_bmControls(desc, protocol)
+
+ switch (protocol) {
+ case UAC_VERSION_1:
+ case UAC_VERSION_2:
+ default:
+ return uac_processing_unit_bmControls(desc, protocol)
+ control_size + 1;
+ case UAC_VERSION_3:
+ return uac_processing_unit_bmControls(desc, protocol)
+ + control_size;
+ }
}
/* 4.5.2 Class-Specific AS Interface Descriptor */
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index bfb3484096a6..39fde49e8749 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -953,6 +953,23 @@ static int check_input_term(struct mixer_build *state, int id,
return 0;
}
+ case UAC3_PROCESSING_UNIT: {
+ struct uac_processing_unit_descriptor *d = p1;
+
+ if (!d->bNrInPins)
+ return -EINVAL;
+
+ /* call recursively to retrieve the channel info */
+ err = check_input_term(state, d->baSourceID[0], term);
+ if (err < 0)
+ return err;
+
+ term->type = d->bDescriptorSubtype << 16; /* virtual type */
+ term->id = id;
+ term->name = 0; /* TODO: UAC3 Class-specific strings */
+
+ return 0;
+ }
default:
return -ENODEV;
}
@@ -2180,6 +2197,11 @@ struct procunit_info {
struct procunit_value_info *values;
};
+static struct procunit_value_info undefined_proc_info[] = {
+ { 0x00, "Control Undefined", 0 },
+ { 0 }
+};
+
static struct procunit_value_info updown_proc_info[] = {
{ UAC_UD_ENABLE, "Switch", USB_MIXER_BOOLEAN },
{ UAC_UD_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 },
@@ -2228,6 +2250,23 @@ static struct procunit_info procunits[] = {
{ UAC_PROCESS_DYN_RANGE_COMP, "DCR", dcr_proc_info },
{ 0 },
};
+
+static struct procunit_value_info uac3_updown_proc_info[] = {
+ { UAC3_UD_MODE_SELECT, "Mode Select", USB_MIXER_U8, 1 },
+ { 0 }
+};
+static struct procunit_value_info uac3_stereo_ext_proc_info[] = {
+ { UAC3_EXT_WIDTH_CONTROL, "Width Control", USB_MIXER_U8 },
+ { 0 }
+};
+
+static struct procunit_info uac3_procunits[] = {
+ { UAC3_PROCESS_UP_DOWNMIX, "Up Down", uac3_updown_proc_info },
+ { UAC3_PROCESS_STEREO_EXTENDER, "3D Stereo Extender", uac3_stereo_ext_proc_info },
+ { UAC3_PROCESS_MULTI_FUNCTION, "Multi-Function", undefined_proc_info },
+ { 0 },
+};
+
/*
* predefined data for extension units
*/
@@ -2388,8 +2427,16 @@ static int build_audio_procunit(struct mixer_build *state, int unitid,
static int parse_audio_processing_unit(struct mixer_build *state, int unitid,
void *raw_desc)
{
- return build_audio_procunit(state, unitid, raw_desc,
- procunits, "Processing Unit");
+ switch (state->mixer->protocol) {
+ case UAC_VERSION_1:
+ case UAC_VERSION_2:
+ default:
+ return build_audio_procunit(state, unitid, raw_desc,
+ procunits, "Processing Unit");
+ case UAC_VERSION_3:
+ return build_audio_procunit(state, unitid, raw_desc,
+ uac3_procunits, "Processing Unit");
+ }
}
static int parse_audio_extension_unit(struct mixer_build *state, int unitid,